rankamateur
New Member
hello,
i've posted elsewhere on the site in my naive enthusiasm. sorry for that as im a total diyer and now mightily confused.:RpS_confused:
the issue: i need to render approx 10 sqm osb over a 6' timber frame loft dormer. trowelled i.e like venetian polished finish sought.
option 1. because of price and desired finish, i was going to go riblath then 3 x s /c (battens, membrane/paper etc). It's bound to move but... the largest area is 4 sq m broken up by vertical window openings (not full height but could be framed up that way to create expansion gaps). And everyone I've mentioned it too thinks i'm bonkers.
option 2. the builders who are helping with the steelwork suggested render board and hpx after which I could do a thinnish s / c or some variant but this is probably double the price. the microcement people are keen to sell a thin topcoat which is the look i'm after but fkn expensive and you've got to put a lacquer on it which worries me if moisture gets between that and the hpx.
One good thing is that if the hpx is water resistant then I don't mind (some and small) crazy paving cracks in the topcoat (part of finish).
Lastly, I know that the responsible thing to do is call in the pro's but I did all the levelling and skimming on the inside and made all the mistakes like trying to do it in one go (my mate was a crap teacher), leaving it too long, floating too hard, trying to regain control with buckets of water, too stiff on the ceilings and too wet on the walls (floor), not knowing what beads were and doing corners freehand or against a bit of ply, no pva, pva too wet, pva dry and waterproof etc etc. And I've enjoyed it so i've kind of got to have a go at the outside.:rolleyes)
Any advice appreciated.
i've posted elsewhere on the site in my naive enthusiasm. sorry for that as im a total diyer and now mightily confused.:RpS_confused:
the issue: i need to render approx 10 sqm osb over a 6' timber frame loft dormer. trowelled i.e like venetian polished finish sought.
option 1. because of price and desired finish, i was going to go riblath then 3 x s /c (battens, membrane/paper etc). It's bound to move but... the largest area is 4 sq m broken up by vertical window openings (not full height but could be framed up that way to create expansion gaps). And everyone I've mentioned it too thinks i'm bonkers.
option 2. the builders who are helping with the steelwork suggested render board and hpx after which I could do a thinnish s / c or some variant but this is probably double the price. the microcement people are keen to sell a thin topcoat which is the look i'm after but fkn expensive and you've got to put a lacquer on it which worries me if moisture gets between that and the hpx.
One good thing is that if the hpx is water resistant then I don't mind (some and small) crazy paving cracks in the topcoat (part of finish).
Lastly, I know that the responsible thing to do is call in the pro's but I did all the levelling and skimming on the inside and made all the mistakes like trying to do it in one go (my mate was a crap teacher), leaving it too long, floating too hard, trying to regain control with buckets of water, too stiff on the ceilings and too wet on the walls (floor), not knowing what beads were and doing corners freehand or against a bit of ply, no pva, pva too wet, pva dry and waterproof etc etc. And I've enjoyed it so i've kind of got to have a go at the outside.:rolleyes)
Any advice appreciated.
